Biomass and pigments production in photosynthetic bacteria wastewater treatment: Effects of photoperiod

“…in waste water treatment [23]. Higher frequency of the light/dark cycle leaded to higher biomass production, which signified a higher photosynthetic efficiency [24]. However the amount of carotenoid produced by purple non-sulfur bacterium directly determines the energy captured bacteria and affects the growth characteristics such bacteria.…”

Section: The Effects Of Diluted Vegetable Waste Juice (Vwj) On the Grmentioning

confidence: 99%

Utilization of Vegetable Waste Juice by Purple Non-Sulfur Bacterium (<i>Afifella marina</i> Strain ME) for Biomass Production

Azad¹,

Wong²,

Lal³

2018

GEP

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This experiment was conducted to determine the possibility of utilization of vegetable waste juice in the production of purple non-sulfur bacterium Afifella marina biomass. Bacterium was cultured in four diluted such as, 10%, 20%, 30% and 40% (v/v) vegetable waste juices. In addition synthetic 112 media were used as control to compare the growth characteristics of Afifella marine. The bacterium Afifella marina grew well in 10% diluted vegetable waste juice in anaerobic light condition with the highest production of 5.02 g/l dry cell weight in fifth day of culture, whereas the highest total carotenoid production of 0.87 mg/g dry cell weight was recorded in third day of culture. The highest dry cell weight productions recorded in 10% of VWJ was significantly higher compared to four other treatments (F = 14.63; p = 0.00). However, the total carotenoid production of bacteria in 10% VWJ showed no significant difference compared to the carotenoid production in 112 synthetic media, but was significantly higher compared to three other treatments (P = 0.00). The bacterium, Afifella marina has the ability to use vegetable waste juice at certain level for the production of bacterial biomass.

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“…Furthermore, the light regime in which microalgal cultures are submitted is considered a determining factor in the cell productivity and chemical composition of biomass [10]. Several authors have previously reported that, besides reducing the operational costs of the process, the use of photoperiod can improve the photosynthetic rate as well as the productivity and quality of intracellular products [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Artificial lighting strategies in photobioreactors for bioenergy production by Scenedesmus obliquus CPCC05

et al. 2019

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This work aimed to evaluate the artificial lighting strategies to increase the viability of microalgae biodiesel production. Different long-term, frequency, and short photoperiods were examined. Besides, the productivities of the process, the chemical composition of the biomass, biodiesel quality, and energy balance were assessed. The results showed that Scenedesmus obliquus CPCC05 can store sufficient energy to sustain cell growth for continuous periods of up to 2 h in the dark, without affecting the productivities of the process. The values for the maximum biomass (63.88 mg/L h) and lipid (18.9 mg/L h) productivities as well for the calorific value (20.4 kJ/g) were obtained at a photoperiod of 24 t/d. It was qualitatively observed that the photoperiod significantly influenced the fatty acid profile of single-cell oil and, consequently, the quality of the produced biodiesel. Finally, the use of photoperiods also proved to be an effective strategy to improve the energy balance and reduce the environmental impact of the microalgae biodiesel production process.

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Biomass and pigments production in photosynthetic bacteria wastewater treatment: Effects of photoperiod

Cited by 61 publications

References 23 publications

Control tools to selectively produce purple bacteria for microbial protein in raceway reactors

Control tools to selectively produce purple bacteria for microbial protein in raceway reactors

Utilization of Vegetable Waste Juice by Purple Non-Sulfur Bacterium (<i>Afifella marina</i> Strain ME) for Biomass Production

Artificial lighting strategies in photobioreactors for bioenergy production by Scenedesmus obliquus CPCC05

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Biomass and pigments production in photosynthetic bacteria wastewater treatment: Effects of photoperiod

Cited by 61 publications

References 23 publications

Control tools to selectively produce purple bacteria for microbial protein in raceway reactors

Control tools to selectively produce purple bacteria for microbial protein in raceway reactors

Utilization of Vegetable Waste Juice by Purple Non-Sulfur Bacterium (&lt;i&gt;Afifella marina&lt;/i&gt; Strain ME) for Biomass Production

Artificial lighting strategies in photobioreactors for bioenergy production by Scenedesmus obliquus CPCC05

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Utilization of Vegetable Waste Juice by Purple Non-Sulfur Bacterium (<i>Afifella marina</i> Strain ME) for Biomass Production